Day two of MegaCon was the most overwhelming day of the con, since the crowds were, quite simply, NUTS. I'd hoped to arrive early enough to see Wil Wheaton's panel, but traffic was at a standstill miles out from the convention center, so by the time we made the long trek in from the parking lot and had my alter ego fully assembled, the panel had already begun. (Fooey.) Happily, the rest of the day more than made up for it: We have John to thank for all of today's photos, with me occasionally…